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Beamline 12.3.1

Multiple-Wavelength Anomalous Diffraction (MAD) Protein Crystallography and Small-Angle X-Ray Scattering (SAXS)

Operational

2002

Source characteristics

Superbend

Energy range

6-18 keV

Monochromator #1

Double crystal

Calculated flux (1.9 GeV, 400 mA)

5 x 1011 photons/s (100 µm collimator)

Resolving power (E/DE)

7000

Monochromator #2

Double multilayer

Calculated flux (1.9 GeV, 400 mA)

4 x 1013 photons/s

Resolving power (E/DE)

100

Endstations

Hutch

Detectors

Monochromator #1: 2 x 2 array CCD

Monochromator #2: Fast wire chamber

Calculated spot size at sample (FWHM)

Monochromator #1: 65 x 150 µm

Monochromator #2: 6 x 1 mm

Samples

Format

Monochromator #1: Single-crystal biomolecules

Monochromator #2: Solutions

Preparation

Support labs available

Sample environment

Monochromator #1: Cryofrozen crystals

Monochromator #2: Liquid cell

Special notes

Computers for data processing and analysis are available

Scientific applications

Biological crystallography; multiple-wavelength anomalous diffraction (MAD), small-angle x-ray scattering (SAXS)

Local contact

Name: Howard Padmore
Phone: (510) 486-5787
Fax: (510) 486-7696
Email: hapadmore@lbl.gov

Spokesperson

Name: John Tainer
Affiliation: The Scripps Research Institute
Phone: (858) 784-8119
Fax: (858) 784-2277
Email: jat@scripps.edu

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